Draft-equalizer



(No Model.)

J. S. SHUOK.

DRAFT EQUALIZER.

No. 393,272. Patented Nov. 20, 1888;

N. PETERS. Phnloiimogrnphcr. Washinglon. u. c.

UNITED STATES PATENT Fries.

JOHN S. SHUCK, OF FULLERTON, NEBRASKA.

PRAFT=EQUALIZER SPECIFICATION forming part of Letters Patent No. 393,272, dated November 20, 1888.

Application filed May '7, 1888.

T0 (l/ZZ whom it may concern.-

Be it known that I, JOHN S. SHUOK, of Fullerton, in the county of Nance and State of Nebraska, have invented a new and useful Improvement'in Draft-Equalizing Stays, which improvement is fully set forth in the following specification and accompanying drawings, in which- Figure 1 is a top or plan view of my improved draft-equalizing stays for eveners and whiffletrees; Fig. 2, a view of the clip attached to the pole of a vehicle to support the grooved pulley; and Fig. 3, a View of the grooved pulley, the hollow stud, and the disk to which it is attached, the recess in the clip to receive the same, and the wedge-shaped washer for adjusting the disk.

The object of my invention is to provide improved draft-equalizing stays to be adjustably attached to eveners and whiffletrees, and designed to increase their efficiency and usefulness by staying and supporting them in all their relative positions, and securing perfect equality of draft, without interfering with the freedom of their movement'within prescribed limits, and arresting the motion at any desired point without racking or straining. My device also provides means for transferring the draft directly from the whiffletree to the evener, thereby obviating the downward and forward tendency of the former, the twisting of the latter-,and the danger of fracture of the bolt uniting the two, in consequence of the transverse strain upon the same. These results are secured by the mechanism illustrated in the accompanying drawings, in which A designates a swivel composed of two segments united at their ends, the outer segment having a tongue to engage the groove in a pulley, B, which is pivoted to the pole of a vehicle at a suitable distance rearwardly of the evener G. The said swivel is approximately one-fourth of a circle described by a radius which is found by taking the distance between the center of the pulley and the point where the stay-rods are attached to the segment.

The rear ends of the stay-rods D are attached to the end of the swivel by screw bolts and nuts and by means of apertures in the ends of the swivel, the series of which extends on a Serial No. 273,154. (No model.)

line toward the center of a circle of which the segment composes a part. The stay-rods may be shifted obliquely backward or forward,thus increasing or diminishing the length of the swivel between them, by which means the swing of the evener to which the forward ends of the stay-rods are attached may be also increased or diminished at pleasure, the play of the swivel on the pulley being limited to the interior semicircular ends of the swivel engaging the pulley.

To provide means for attaching the pulley firmly but adj ustably to the pole, so that the swivel may oscillate on a plane corresponding with that of the evener, I employ a clip, E, attached to the pole in the usual manner,having on top a rim forming a cup or recess to receive the disk F, centrally upon which is a hollow stud, G, which serves as a pivot for the pulley. If the pole be bent, a wedge-shaped washer, G, may be inserted under the diskin such a position as to effect the proper adjustment of the disk and pulley on the desired plane. By this arrangement it will be seen that the traction of the stay-rods is borne by the disk and its bearing on the forward part of the rim. The belt H is thus relieved from the strain and serves merely to hold the parts in engagement.

The whi'li'letree I is attached to the evener by a clevis, J, secured by a bolt and nut in the usual manner. An integral hollow stem or sleeve, K, extends rearwardly from the bow of the clevis, and is tapped to engage the threaded end of the stay-rod, the length of which is thus made accurately and readily adjustable. The peculiar form of the clevis and the manner of attaching the same to the stayrod obviates the tendency of the whiffletree to tilt forward and thereby cause the twisting strain upon the evener.

It will be understood that the various parts of my device are to be constructed of the most suitable materialsandthe size and proportions of the same are to be graded according to the uses to which they may be applied and the demands upon the strength of the parts.

\Vhat I claim as new is 1. In draft-equalizing stays, a swivel, A, composed of two segments, the outer of which is tongucd, combined with and rotating on a grooved pulley adj ustabl y pivoted on the pole rods,a1ultl1e doubletrec,substantially asherei n or tongue of a vehiele,rearwardly of the cvener set forth. or (loubletree,substantially as herein set forth. In testimony thatI claim the foregoing I have 2. The segmental swix el A,a(ljustably conhereunto set my hand, this 5th day of Decem- 5 necting with the staya'orls and combined with her, 1887, in the presence of witnesses.

and rotating on a pulley adj ustably pivoted on the tongue of the vehicle, substantially as de- JOHN SHULK scribed. Witnesses:

3. The combination of the clip having the LYMAN HARRIS,

10 grooved pulley, the swivel, the adj ustable stay- CLARENCE E. BRADY. 

